Gefran WD SERIES Data Sheet

OIL-FILLED MELT PRESSURE TRANSMITTERS

WD SERIES DP404 CAN OPEN digital output

The WD series of Gefran, are pressure transmitters for
using in High temperature environment.
The main characteristic of this series is the capability to
read temperature of the media up to 315°C.
The constructive principle is based on the hydraulic tra­smission of the pressure.
The fluid-filled system assures the temperature stability.
The phisical measure is transformed in a electrical mea­sure by means the strain-gauge technology.

MAIN FEATURES

Electrical

• Digital output signal with DP404 CAN OPEN communica­tion protocol

• Transmission frequency (Baud rate): 10 Kbaud to 1Mbaud
(default 500 Kbaud)

• Software selection of Baud rate and ID nodes

• Operation with 1 or 2 settable alarm limits

• “Autozero” for temperature compensation

• Zero and span drift compensation

• 80% FSO calibration signal

• Filling with certifyd oil FDA, CFR178.3620 and
CFR172.878

Mecanical

• Pressure ranges: 0-35 to 0-1000 bar/0-500 to 0-15000 psi

• Precision: < ± 0.25% FSO (H); < ±0.5% FSO (M)

• Extensimetric measurement principle with Wheatstone
jumper

• Hydraulic transmission system to guarantee temperatu­re stability (diathermic oil). Filling with certifyd oil FDA,
CFR178.3620 and CFR172.878

• Quantity of oil contained for model:

series WD0 (30mm3); series WD1,WD2,WD3 (40mm3)

• Standard threading: 1/2-20 UNF, M18x1.5; other versions
on request

• Autozero function by software

• Stainless steel 17-7 PH diaphragm with GTP+ coating

GTP+ (advanced protection)
Coating with high resistance against corrosion, abrasion
and high temperature

TECHNICAL SPECIFICATIONS

Rated precision, including effects of
linearity, repeatability and hysteresis
Sampling
Pressure ranges

Maximum applicable pressure
Measurement principle
Power supply
Typical input
Insulation resistance (at 50Vdc)
Signal at rated pressure (FSO)
Signal at ambient pressure
Calibration of ambient pressure
Signal protocol

Response time (10 at 90% FSO)

Electronic response time
(10 at 90% FSO)

Calibration signal
Protection against overvoltage and
reverse polarity of power supply
Compensated temperature range of
strain Gauge Housing
Maximum temperature range of
strain Gauge Housing
Thermal drift in compensated range;
Zero
Calibration
Sensitivity
Max. diaphragm temperature
Influence due to variation of fluid
temperature (zero)

Standard Material in contact
with process medium

Thermocouple (model WD2)
Protection level
Electrical connections

H < ±0.25%FSO (350…1000 bar)
M < ±0.5%FSO (35…1000 bar)

0-500 to 0-15.000 psi

0-35 to 0-1000 bar

Depends on FSO

Insertion of an offset

DP404 CAN OPEN, with baud

rate selectable from 10K to

1M baud (default 500 Kbaud)

Diaphragm:

• 17-7PH corrugated diaphragm
with GTP+
Stem

• 17-4 PH

STD: Type * J (isolated coupling)

M12 DIN EN 50044 5-pin

16 bit (1)

2 x FSO

Strain gauge

12…40 Vdc

20 mA (2)

>1000 MOhm

0

20 ms

2 ms

80%FSO

YES

0…+85°C

32…+185°F

-30…+105°C

-22…+221°F

<0.02 %FSO/°C
<0.01 %FSO/°F
<0.01 %FSO/°F
315°C (600°F)

0.04bar/°C

30 Psi/100°F

IP65

connector

(1) resolution: 0.01 bar from 35…500bar; 0.1 bar from 700…1000bar;

0.1 psi from 5000…350psi; 1 psi from 7500…15000psi
(2) Conditions: Power supply 24 Vdc
FSO = Full Scale Output (Signal at rated pressure)

MECHANICAL DIMENSIONS

WD0

D1

D2

D3

D4

D5

A

B

C

WD2

1/2 - 20UNF

ø7.8 -0.05

[ ø0.31” -0.002 ]

ø10.5 -0.025

[ ø0.41” -0.001 ]

ø10.67

[ ø0.42” ]

ø12.7

[ ø0.5” ]

5.56 -0.26

[ 0.22” -0.01 ]

11.2

[ 0.44” ]

15.74

[ 0.62” ]

WD1

Ch

[Hex]

D1

D2

D3

D4

D5

A

B

C

Ch

[Hex]

16

[ 5/8” ]

M18x1,5

ø10 -0.05

[ ø0.394” -0.002 ]

ø16 -0.08

[ ø0.63” -0.003 ]

ø16 -0.4

[ ø0.63” -0.016 ]

ø18

[ ø0.71” ]

6 -0.26

[ 0.24” -0.01 ]

14.8 -0.4

[ 0.58” -0.016 ]

19

[ 0.75” ]

19

[ 3/4” ]

WD3

Exposed

capillary
D1 1/2-20UNF
D2 .307/.305”

[7.80/7.75mm]
D3 .414/.412”
[10.52/10.46mm]
A .125/.120”
[3.18/3.05mm]
B .318/.312”
[8.08/7.92mm]
C .81”
[20.6mm]

NOTE : dimensions refer to rigid stem length option “4” (153 mm – 6”)

WARNING : For installation use a maximum tightening torque of 56 Nm(500 in-lb)

ELECTRICAL CONNECTIONS

Shielding is connected to transducer body. It is advisable to ground it on the instrument side as well.

CAN BUS DP404 DIGITAL OUTPUT

n.c.

Controller

Can Output

power +

power -

Can H

Can L

5-pin

1

2

3

4

5

M12 DIN EN 50044 5-pin connector

ACCESSORIES

Connectors
5 pin female connector (IP65 protection) CON031

Extension cords

5-pin connector with cord length 1 meter (3.3 ft) PCAV161
5-pin connector with cord length 2 meters (7 ft) PCAV162
5-pin connector with cord length 5 meters (17 ft) PCAV163

Other lengths on request

Accessories

Fastening bracket SF18
Protective plug for 1/2 - 20 UNF SC12
Protective plug for M18x1.5 SC18
Punch kit for 1/2-20 UNF KF12
Punch kit for M18x1.5 KF18
Cleaning kit for 1/2-20 UNF CT12
Cleaning kit for M18x1.5 CT18

Cord color code

Conn.

1

2

3

4

5

Wire

n.c.

Red

Black

White

Blue

ORDER CODE

OUTPUT SIGNAL

CAN BUS D

CONFIGURATION

Rigid rod
Rigid + flexible rod
With thermocouple

Exposed capillary

CONNECTOR

Standard

5-pin M12 5

PRECISION CLASS

± 0.25%

(ranges ≥100 bar/1500 psi)

± 0.5% M

MEASUREMENT RANGE

bar

3550B35U

B05D

70 B07D
100 B01C

200

B02C
350 B35D
500 B05C

700 B07C

1000 B01M

500

750
1000 P01M
1500 P15C

3000 P03M
5000 P05M

7500

10000 P10M

15000 P15M

psi

0

1

2

3

H

P05C
P75D

P75C

W

000

000= Special executions of the
standard version or custom
versions may be ordered on
request

LENGTH OF FLEXIBLE ROD(*)

(mm / inches)

Standard (WD0)

0

Standard (WD1, WD2)

D

Standard (WD3)

L

On request

A
B

C

LENGHT OF RIGID ROD (*)

(mm / inches)

Standard (WD0, WD1, WD2)*

4

Standard (WD3)

0

On request

1
2

3
6

7
8

THREADING

Standard

1

none

457mm
610mmE
760mmF

711mm

76mm
152mm
300mm

153mm
318mm5

none

38mm

50mm

76mm
350mm
400mm

456mm

1/2 - 20 UNF
M18 x 1.54

18”
24”
30”

28”

3”
6”

12”

6”

12.5”

1.5”
2”
3”

14”
16”
18”

(*) note: max. total length of
rigid/flexible rod is 914 mm-36”

Example

WD0-5-M-B07C-1-4-0-000

Oil-filled melt pressure transducer with Can output, 5-pin connector, 1/2 - 20 UNF
threading, pressure range 700 bar, precision class 0.5%, 153 mm (6”) rigid rod.

WD1-5-M-P03M-1-4-D-000

Oil-filled melt pressure transducer with Can output, 5-pin connector, 1/2 - 20 UNF
threading, pressure range 3000 bar, precision class 0.5%, 153 mm (6”) rigid rod,
457 mm (18”) flexible rod.

Sensors are manufactured in compliance with:

- EMC compatibility directive

- RoHS directive

Electrical installation requirements and Conformity certificate are available on our web site: www.gefran.com

GEFRAN spa reserves the right to make aesthetic or functional changes at any time and without notice.

DTS_WD_04-2017_ENG